| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 181 | Oscillation switch and a portable electrically driving machine with the oscillation switch | US737676 | 1996-11-21 | US5747762A | 1998-05-05 | Kenji Fukuda; Osamu Asano |
| An oscillation switch consists of a pair of ring-shaped electrodes each having an inner surface coaxially provided with a projection and spaced apart at a predetermined distance, and balls arranged in a space formed between the electrodes so that the balls engage the projections to electrically connect the electrodes together when oscillation or lateral sliding occur. A portable electrically driven machine provided with the oscillation switch has the oscillation switch provided on a frame and has a structure which stops a tool rotating motor and a feed motor by interrupting the electric power supply to a control unit of the electric tool. The use of the oscillation switch allows the tool rotating motor or the feed motor to stop as soon as lateral sliding or oscillation starts to occur or when the portable electrically driven machine starts to fall down even if the portable electrically driven tool takes any posture. | ||||||
| 182 | Earth-tremor-responsive light | US467312 | 1995-06-06 | US5546076A | 1996-08-13 | Roy P. Foerster |
| An earth-tremor-responsive light contained in a main housing is described having a back member for mounting against a vertical wall and a light transmitting front cover; a stand-by battery; a light emitter; electrical circuit elements connecting the battery to the light emitter through an inertial switch which is actuated by acceleration resulting from earth tremors, the inertial switch including a switch chamber having a generally horizontal shallow upwardly-facing conical surface with a central apex at a lower point thereof; a spherical ball urged by gravity to rest in a central disposition on the conical surface; a vertical shaft projecting externally of the main housing and disposed in the chamber aligned with the central apex and above the ball, the shaft being guided for vertical movement in the chamber and having a lower end resting on top of the ball; a spring urging the shaft downwardly to a set position against the ball at rest in its central disposition, whereby a peak acceleration resulting from an earth tremor shaking the switch and exceeding a predetermined magnitude will displace the ball and conical surface relatively horizontally to an extent that the shaft will be urged to drop downwardly from its set position by the spring toward the central apex and thus hold the ball displaced in an offset disposition relative to the central apex of the conical surface; first electrical contact elements carried by the vertical shaft in a first state when the ball is in the central disposition and being shifted to a second state when the ball is displaced to its offset position; and second electrical contact elements engaged by the first contact elements when shifted to their second state to actuate the switch and complete the electrical circuit such that the light emitter is energized, the first electrical contact elements being resettable to the first state by externally lifting the shaft against the spring and allowing the ball to return by gravity to the central disposition, and returning the shaft to its set position. | ||||||
| 183 | Vibration warning device including mercury wetted reed gauge switches | US195480 | 1994-02-14 | US5415026A | 1995-05-16 | David Ford |
| An improved vibration warning device is disclosed for monitoring rotating machinery, and signaling the occurrence of an unsafe condition. The apparatus includes a one or more mercury wetted resonating reed gauge switches tuned to a critical frequency that lies within a predetermined range of the critical frequency of the rotor. An imbalance force imposed by the rotor is transmitted to the device and if the imbalance force exceeds a predetermined threshold, the mercury wetted reed gauge switch/switches will conduct an appropriate electrical warning signal. | ||||||
| 184 | Vibration sensing device | US545709 | 1990-06-29 | US5053589A | 1991-10-01 | John T. Grant |
| A vibration sensing device comprises an insulated housing having supported therein a weight and a centrally extending conducting shaft. Two spaced parallel conductors extend across the housing and engage the shaft, one above and one below the shaft and engaging the top of the shaft and the bottom of the shaft, respectively. The weight presses the shaft down on the nearer conductor and up against the farther conductor. The shaft thus acts as a lever using the near conductor as a fulcrum and pressing upwardly against the farther conductor. The shaft thus bridges the two conductors and connects them. The housing when mounted with the shaft horizontal maintains a closed circuit which will be opened when the housing is subjected to vibrations such as those occurring during a break-in. The opening of the circuit is used to actuate an alarm. The sensitivity of the device may be adjusted by moving the conductors with respect to one another, an adjusting screw available outside the housing being provided for this purpose. | ||||||
| 185 | Vibration monitor for rotating or moving equipment | US510511 | 1990-04-18 | US5034729A | 1991-07-23 | Lynn C. Lundquist |
| This invention pertains to a device which is attached on rotating or moving equipment for the purpose of monitoring unsafe levels of equipment vibration. The invention comprises a mechanical assembly which is adjustably sensitive to the vibration amplitude of its given application. The monitor is so designed that it does not include the electronic switching device as an integral part of the invention. Rather, commercially available switching devices (proximity switches) are used as the electronic switching component. In the preferred embodiment, the unit is sensitive to vibration in any plane. The vibration monitor is a signaling device; it can be used to sound an external alarm, engage safety equipment, or disengage or stop moving equipment. It was developed as an inexpensive, rugged, device which can be used in conjunction with general purpose proximity switches to give vibration monitoring capability to an existing proximity switch product line. | ||||||
| 186 | Integrated impact detection and alarm system | US285777 | 1988-12-16 | US4942386A | 1990-07-17 | Billy R. Willis |
| An impact sensing and alarm system having a dual adjustment impact system and alarm circuit for activating selected alarm devices in conjunction with tamper switches connected to provide additional protection to critical areas of a machine. The impact sensor provides dual sensitivity with an adjustable conically tapered spring circumjacent an adjustable threaded contact. The spring is adjustable for coarse setting of the impact loading range and is then fixed. The threaded contact is adjustable to fine tune the threshold sensitivity. An alarm circuit is provided which is constructed to activate visible, audible or silent remote alarms. The impact alarm system is encapsulated to prevent access except to the adjustable threaded contact, and is simple and compact enough to be adaptable to protect any coin-operated or other electronic device. | ||||||
| 187 | Burglar alarm including a reed relay actuated in response to a vibrating magnet to produce an alarm signal | US133229 | 1987-12-14 | US4864087A | 1989-09-05 | Yu-Hua Chen |
| The present disclosure is directed to an improved burglar alarm which is mounted on a base having a concaved space for receiving therein a ring-like magnet with an elongated resilient arm, vibratable as a result of external force, and a magnetic switch tube actuated in response to the vibrating magnet which changes either the magnet polarity or intensity of the magnetic force thereof so to produce signals to actuate a connected alarm apparatus. | ||||||
| 188 | Vibrating sensing device | US828125 | 1986-02-11 | US4681991A | 1987-07-21 | Francis J. Anderson |
| The invention provides a vibration sensing device which is used in safety and security equipment. Such devices comprise a main inertia mass on a support assembly to form an electrical switch which in turn is part of an electrical monitoring circuit. The support assembly includes at least two stationary space-apart electrically conductive and mutually electrically insulated supports. The invention provides more than one main inertia mass and an additional inertia mass supported by at least a pair of main inertia masses. On sensing vibration all the inertia masses will resonate, the provision of the additional inertia mass increasing the number of electrical paths through which current can flow. For example, if there are first and second main inertia masses and an additional inertia mass, a signal, in addition to being transmitted across one main inertia mass from one support to the other can also be delivered from one support, through the first main mass, the additional inertia mass and the second main mass to the other support. There are thus four electrical paths where before without the additional inertia mass there were two. | ||||||
| 189 | Structure of vibration sensor | US840851 | 1986-03-18 | US4679033A | 1987-07-07 | Shih-Ming Hwang |
| A new structure of vibration sensor mainly comprising two metal conducting plates on its body, one of which is installed with an adjusting screw and the other with a fixing screw connecting to a vibrating spring which is connected to a hopper conductor at the other end. The adjusting screw is located in such a manner that its tip is in the middle of the hopper conductor, so that when the vibrating spring detects shock signals it causes contact between the hopper conductor and the adjusting screw. | ||||||
| 190 | Shock-sensitive electrical switch | US255701 | 1981-04-20 | US4356364A | 1982-10-26 | John Soto |
| A vibration and shock-sensitive electrical switch comprising a disc mounted tube with a small snap switch such as a Microswitch centered above the tube end on the disc surface. A switch-actuating wire extends from the switch trigger mechanism through the tube so that when the tube is balanced on its bottom end, the switch is in its first switching position, and when tipped over by vibration or shock, the switch-actuating wire is released and the switch goes to its second switching position. Vibration sensitivity may be adjusted by attaching various diameter or irregular shaped collars on the bottom end of the tube. | ||||||
| 191 | Seismic safety cutoff switch | US936782 | 1978-08-25 | US4191868A | 1980-03-04 | Paul B. Sunde |
| A seismic safety cutoff device responsive to external forces such as earthquakes, for use with an electrical switch for controlling the flow of electricity, including a housing adaptable to a switch mechanism having a spring-biased control stem, the safety cutoff device also having a substantially vertically-mounted rod which is pivotable near its upper end to permit movement in any horizontal direction of a weight at its lower end for releasing the spring-biased stem upon it's deflection by an external force. A stem-positioning member is connected to the control stem and extends outward through the housing for easy visual inspection and for ease of re-setting the device after being tripped by an external force. | ||||||
| 192 | Vibration sensing device | US919519 | 1978-06-27 | US4185180A | 1980-01-22 | Francis J. Anderson |
| The invention provides a vibration sensing device which is used in safety and security equipment. The device is effectively an electrical switch and includes a pair of spaced apart electrically conductive plates each having an annular track formed by a hole. An electrically conductive bar is mounted between the plates on the tracks. On sensing a vibration the bar will resonate lifting off the tracks thus making and breaking the electrical circuit between the plates. | ||||||
| 193 | Seismic safety cutoff device | US745483 | 1976-11-26 | US4131124A | 1978-12-26 | Paul B. Sunde |
| A seismic safety cutoff device responsive to external forces such as earthquakes, for use with a valve for controlling the flow of gases or liquids including a housing adaptable to a valve mechanism having a spring-biased valve stem, the safety cutoff device also having a substantially vertically-mounted rod which is pivotable near its upper end to permit movement in any horizontal direction of a weight suspended at its lower end for releasing the spring-biased valve stem upon its deflection by an external force. A vertical stem-positioning rod is positioned between the valve stem and the pivotable rod for easy visual inspection and for ease of re-setting the device upon actuation. | ||||||
| 194 | Inertia switch for sensing vibration forces | US622474 | 1975-10-15 | US4042796A | 1977-08-16 | Henry R. Zink |
| A delicately balanced but normally closed polished ball bearing sensor highly responsive to physical vibrations of its immediate environment having security significance. A ball bearing is confined within a cylindrical metal shell with a very slight clearance permitting free vibration of the ball within said shell and resting by gravity upon the rounded head of a metal electrode mounted axially in an epoxy block also confined within said shell, conductor leads being soldered to said shell and said electrode and the assembly being enveloped co-axially within an epoxy casting having a flat face covered by a waterproof pressure adhesive serving to secure the sensor to any smooth flat vertical surface whereby the sensor is mounted in upright vertical position. | ||||||
| 195 | Inertia type switch with coaxial conductive springs | US3731022D | 1971-11-12 | US3731022A | 1973-05-01 | LOFTUS P |
| A motion sensor for sensing shocks, vibrations or the like utilizing a pair of contacts mounted on vibratory supports so that when the supports vibrate the contacts close, completing an electrical circuit. The vibratory supports and the contacts are such that the quiescent deflections of the two supports in response to constant forces move the two contacts by the same amount to maintain a constant quiescent spacing between the contacts and hence a constant sensitivity of the device to shocks, vibrations or other irregular motions. The sensitivity is therefore constant for a wide range of different quiescent orientations of the device.
|
||||||
| 196 | Vibration-responsive switch | US3641290D | 1970-08-10 | US3641290A | 1972-02-08 | MURPHY FRANK W; MURPHY FRANK W JR |
| A switch for opening and closing electric circuits, the switch comprising a pivotally mounted switch arm normally disposed in switch closed position, magnet coupling means for holding said switch arm in its closed position, means exerting a biasing force on said switch arm constantly tending to urge said switch arm for movement to an open position, the coupling force exceeding the biasing force, said switch arm forming a first moment of inertia arm, and a weighted lever assembly forming a second moment of inertia arm, said weighted lever assembly being connected with the switch arm, and the switch arm being assembled in such a manner that when an inertial force from any direction added to the biasing force exceeds the coupling force, the switch arm will be caused to move from its normally closed position to its open position.
|
||||||
| 197 | Agitation switch | US3594520D | 1969-10-22 | US3594520A | 1971-07-20 | HALL JAMES R; KORDA PETER B |
| Disclosed is a switch element, primarily for use within a detection system. The switch is formed of electrically conductive links intercoupled in a loose chain and exhibits a through impedance, as measured across its terminals, which changes significantly when it is agitated from a state of quiescence.
|
||||||
| 198 | Anti-disturbance switch | US3539740D | 1968-08-26 | US3539740A | 1970-11-10 | ISENOR ERNEST H; KARSTEN CARL G; KEARSLEY JOSEPH B; MOE RICHARD G; SMITH JAMES W |
| 199 | Force responsive switch | US3502831D | 1969-02-03 | US3502831A | 1970-03-24 | MCROSKEY LEONARD H |
| 200 | Vibration monitors | US59205166 | 1966-11-04 | US3419690A | 1968-12-31 | GARIG HENRY H |
QQ群二维码
意见反馈
意见反馈